M22 Bushings | McMaster-Carr

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26 Products

Bearing Locknuts

Carbon Steel

With a nylon insert that grips your threaded shaft or spindle without damaging its threads, these locknuts—also called shaft nuts—hold bearings, bushings, gears, and pulleys prone to vibration tightly in place. They come as one piece, so you can easily clamp them onto your shaft or spindle. But, since they aren’t made entirely of metal, they don’t stand up to heat as well as all-metal locknuts. Slots in their sides mean you can tighten and loosen them with a spanner wrench or spanner socket. Their face is also chamfered to help keep the size and weight of your assembly at a minimum. All meet international standards for bearing locknut dimensions.

Zinc-Plated Carbon Steel—Zinc-plated carbon steel locknuts resist rusting from some moisture, but you shouldn’t use them with salt water or chemicals. They are strong and resist wear, though they don’t stand up to corrosion as well as 303 stainless steel locknuts.

Carbon Steel—All carbon steel locknuts are strong and resist wear, though they don’t stand up to corrosion as well as 303 stainless steel locknuts.

303 Stainless Steel—303 stainless steel locknuts resist corrosion better than carbon steel locknuts but aren’t as strong. They withstand washdowns and chemicals.

Thread Spacing—When choosing your thread spacing, consider the precision of your application. The finer the threads, the more control you have when making adjustments.

	Thread						Carbon Steel		Zinc-Plated Carbon Steel		303 Stainless Steel
	Size	Spacing	OD, mm	Wd., mm	Insert Max. Temp., ° F	Specs. Met		Each		Each		Each
Chamfered Face



		M22 × 1 mm	Extra Fine	34	10.5	160	ISO 2982-2	6343K36	000000	———	0	6343K98	000000


		M22 × 1 mm	Extra Fine	38	10	210	—	———	0	3552N28	000000	———	0
		M22 × 1.5 mm	Fine	38	12.5	210	—	———	0	3552N29	00000	———	0

Key-Locking Threaded Inserts for Soft Metal

Add strong threads in soft metal, such as aluminum. The keys on these inserts drive into holes to hold more securely than thread-locking or helical inserts. They prevent slipping and rotating, so they’re stable enough for use in vehicle or aerospace parts that experience heavy vibration. These inserts are comparable to Keensert inserts.

To install, drill and tap a hole in your material. Then, thread the insert onto the installation tool and screw it into the hole. Place the tool over the keys and hit it with a hammer to drive them in.

Standard Wall—Stronger than thin-wall inserts, these are your go-to choice for threading most holes.

Black Phosphate-Coated Steel—These inserts resist occasional moisture.

18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.

	Inserts									Installation Tools		Inserts with Installation Tools
								Each
	Thread Size	For Tap Thread Size	Installed Lg., mm	Drill Bit Size, mm	For Max. Hole Dia., mm	No. of Locking Keys		1-9	10-Up		Each	No. of Inserts Included		Each
Standard Wall







				Black Phosphate-Coated Steel

				M16 x 1.5 mm	M22 x 1.5 mm	22	20.5	20.5	4	90245A193	000000	000000	94010A345	000000	3	90245A316	000000


				M16 x 2 mm	M22 x 1.5 mm	22	20.5	20.5	4	90245A189	00000	00000	94010A345	00000	3	90245A311	00000
				M22 x 1.5 mm	M32 x 2 mm	32	30	30	4	90245A209	00000	00000	94010A360	00000	3	90245A336	000000




						18-8 Stainless Steel

						M16 x 1.5 mm	M22 x 1.5 mm	22	20.5	20.5	4	93715A660	00000	00000	94010A345	00000	3	93715A470	000000


						M16 x 2 mm	M22 x 1.5 mm	22	20.5	20.5	4	93715A655	00000	00000	94010A345	00000	3	93715A465	000000
						M22 x 1.5 mm	M32 x 2 mm	32	30	30	4	93715A680	00000	00000	94010A360	00000	—	———	0

Key-Locking Threaded Inserts with Installation Tools

Paired with the right tool for installation, these inserts create strong threads in soft metal, such as aluminum. They have keys that drive into material to prevent inserts from slipping and rotating in the hole.

Standard Wall—Stronger than thin-wall inserts, these are your go-to choice for threading most holes.

Black Phosphate-Coated Steel—These inserts resist occasional moisture.

18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.

	Drill Bit Size, mm	For Max. Hole Dia., mm	No. of Locking Keys	No. of Inserts Included		Each
Standard Wall







	Black Phosphate-Coated Steel

	M16 x 1.5 mm	M22 x 1.5 mm	22	20.5	20.5	4	3	90245A316	000000


	M16 x 2 mm	M22 x 1.5 mm	22	20.5	20.5	4	3	90245A311	00000
	M22 x 1.5 mm	M32 x 2 mm	32	30	30	4	3	90245A336	000000




			18-8 Stainless Steel

			M16 x 1.5 mm	M22 x 1.5 mm	22	20.5	20.5	4	3	93715A470	000000


			M16 x 2 mm	M22 x 1.5 mm	22	20.5	20.5	4	3	93715A465	000000

Screw-Locking Seize-Resistant Key-Locking Threaded Inserts for Soft Metal

Create the tightest hold in aluminum and other soft metal without screws sticking. The lubricant on these inserts eases installation, and the irregularly shaped threads won’t let screws back out from vibration. Inserts have keys that drive into material to prevent them from slipping or rotating in the hole.

Standard Wall—Stronger than thin-wall inserts, these are your go-to choice for threading most holes.

Dry-Film-Lubricated Cadmium-Plated Steel—The plating creates a barrier against rust.

Dry-Film-Lubricated 18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.

	Inserts									Installation Tools
	Thread Size	For Tap Thread Size	Installed Lg., mm	Drill Bit Size, mm	For Max. Hole Dia., mm	No. of Locking Keys	Specs. Met		Each		Each
Standard Wall







				Dry-Film-Lubricated Cadmium-Plated Steel

				M16 x 1.5 mm	M22 x 1.5 mm	22	20.5	20.5	4	NA0150E160	97255A333	000000	93904A794	000000


				M16 x 2 mm	M22 x 1.5 mm	22	20.5	20.5	4	—	97255A332	00000	93904A794	00000




						Dry-Film-Lubricated 18-8 Stainless Steel

						M16 x 2 mm	M22 x 1.5 mm	22	20.5	20.5	4	—	97255A213	00000	93904A794	00000

Finish-Your-Own Key-Locking Threaded Inserts for Soft Metal

Tap the thread size you need into the solid body of these inserts. They’re a great choice when you need a custom combination of internal thread size and external diameter. Use them to repair or add new threads in soft metal, such as aluminum. They can also plug threaded holes without the hassle of welding. Keys on the inserts drive into material to prevent slipping and rotating in the hole.

Black Phosphate-Coated Steel—These inserts resist occasional moisture.

18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

	Inserts								Installation Tools
	For Tap Thread Size	Installed Lg., mm	Max. Tapping Dia., mm	Drill Bit Size, mm	For Max. Hole Dia., mm	No. of Locking Keys		Each		Each
Standard Profile







				Black Phosphate-Coated Steel

				M22 x 1.5 mm	22	16	20.5	20.5	4	93774A310	000000	93741A310	0000000




						18-8 Stainless Steel

						M22 x 1.5 mm	22	16	20.5	20.5	4	93543A230	00000	93741A310	000000

Thin-Profile Bearing Nuts

Used in pairs or with another bearing nut, these thin-profile nuts—often called shaft nuts—hold bearings, bushings, pulleys, and gears in place on your threaded shaft or spindle. Threading two nuts tightly against each other makes it harder for vibration to loosen your assembly than if you used only one nut. For the nut closer to the bearing, position the stepped face towards the bearing. These thin-profile nuts have holes on the side, so you can tighten and loosen them with a pin spanner wrench. All meet DIN 1816, an international standard for bearing locknut dimensions.

Carbon Steel—Carbon steel bearing nuts are strong and resist wear.

Thread Spacing—When choosing your thread spacing, consider the precision of your application. The finer the threads, the more control you have when making adjustments.

	Thread
	Size	Spacing	OD, mm	Wd., mm	Specs. Met		Each
Carbon Steel







				Stepped Face

				M22 × 1.5 mm	Fine	40	9	DIN 1816	3549N17	000000

Mil.-Spec. Key-Locking Threaded Inserts For Soft Metal

These inserts are manufactured and tested to meet or compare to strict standards adopted by the U.S. military. The keys drive into aluminum and other soft metal for a secure hold that won't slip or rotate, even in vibrating vehicle or aerospace parts. These inserts are comparable to Keensert inserts.

Standard Wall—Stronger than thin-wall inserts, these are your go-to choice for threading most holes.

High-Strength Cadmium-Plated Alloy Steel—These inserts have the strength to stand up to high-pressure applications and a plating that helps screws thread in smoothly.

	Inserts									Installation Tools
	Thread Size	For Tap Thread Size	Installed Lg., mm	Drill Bit Size, mm	For Max. Hole Dia., mm	No. of Locking Keys	Specs. Met		Each		Each
Standard Wall







				High-Strength Cadmium-Plated Alloy Steel

				M16 x 1.5 mm	M22 x 1.5 mm	22	20.5	20.5	4	NA0150-160	95101A165	000000	93904A794	000000